> I have an ever-growing and ever-re-arranging set of 3 portable cases.
> In one I have a A-190 and plan on adding some Bus-access A-185-1/2
> modules and A-164-1 manual gate modules to it and to the other cases.
> I know there is a problem and potential danger with having the
> A-185s, A-164-1, and the A-190 in the same cabinet (if the busses are
> connected) without removing internal jumpers on A-190. What other
> modules should I have the same concerns about Also will the A-190
> drive multiple VCO's like the A-185s will I may have damaged my 190
> already by temporarily having it on the same buss as my new A-164-1
> module (I have to start reading the manuals before turning them on!).
> The A-190 seems not to send gates to the A-141 on the same buss but I
> have to pull some modules to get a better look inside. Basically I'm
> sort of lazy and it would be nice to get a list of modules that send
> or receive CV and Gates to and from the buss that could possibly
> damage each other. I'm trying to avoid having to look through all the
> PDF manuals.
>
> -James

Here is the list

1. CV/Gate transmitters

A-164-1: gate (can be turned on/off via jumper)
A-185-1: gate and CV (can be turned on/off separately via jumpers)
A-185-2: CV (can be turned on/off via jumpers)
A-190 : gate and CV (can be interrupted separately by cutting wire jumpers)

2. CV/Gate receivers

A-110 : CV (can be turned on/off via jumper, normalled to jack socket CV1)
A-111 : CV (can be turned on/off via jumper, added to the pitch, i.e. not
normalled to socket CV1)
A-140 : gate (can be turned on/off via jumper, normalled to gate socket)

Remarks:
1. Do not connect two CV transmitters or two gate transmitters to the same
bus ! This causes a short circuit that may damage the transmitter modules as
these are not equipped with protection resistors at the outputs (like other
A-100 modules).
1. If more than two VCOs are driven by the same source (e.g. A-190, A-170) a
CV buffer is recommended (A-185-1 or A-185-2). For gate signals this is not
necessary.
2. The gate and CV bus can be interrupted in the middle of each bus board by
two jumpers to obtain different bus groups
3. If the CV and/or gate of different bus boards have to be connected (e.g.
if the A-190 and A-140 are located at different bus boards) a special
CV/gate connection cable is available (order no. A-100BC)

It is possible to connect each module to the bus CV or bus gate (if
meaningful) even later. The procedure is described on the A-100 DIY page:
"subsequent bus normalling of modules"

I know that the bus connection features of the modules is a bit inconsequent
(e.g. the missing gate connection for the A-141). But I ask for your
understanding as the modules were developed over a time span of more than 12
years by different developers. With the subsequent bus normalling of modules
each module can be connected to the bus if desired. We do these
modifications upon request even in the factory.

I'll add this information as a separate document to our website.

Best wishes
Dieter Doepfer